Year	% of total merchandise exports
1960	70.16803344589162
1961	71.81012605566418
1962	71.91418990307318
1963	71.48277980557262
1964	72.14873078298176
1965	73.85199733796483
1966	76.1196657592871
1967	77.7916534217338
1968	77.01063742630318
1969	77.90613955819309
1970	76.98117406800252
1971	77.60749157283072
1972	79.25654102315906
1973	80.95258228957124
1974	80.85493745908093
1975	80.23383266970137
1976	82.41183352153125
1977	82.67128661907238
1978	84.02211082848225
1979	85.0346491063489
1980	84.68042761095076
1981	80.83681766035507
1982	76.37229637652419
1983	74.2697966920515
1984	72.97838320968175
1985	73.32612798337628
1986	75.36619439683574
1987	75.13507755939114
1988	71.98335801443653
1989	73.5517222442147
1990	74.83477487761702
1991	77.6679209844023
1992	76.68285159880195
1993	76.01143260448279
1994	75.90514782515334
1995	69.63861954272647
1996	72.88066597355173
1997	73.9716065215543
1998	73.23238693646145
1999	73.95287572276746
2000	66.73522569375838
2001	67.019795368318
2002	66.79262937168399
2003	65.67718640650644
2004	64.39677697183876
2005	63.707178634021
2006	63.093123696121204
2007	62.08162746419453
2008	60.8001776568161
2009	59.11192759307177
2010	59.52269781919588
2011	58.42230917660586
2012	58.58554685134484
2013	57.46251896900024
2014	56.57674516478751
2015	56.94281665901487
2016	57.68996118198132
2017	55.960074000421756
2018	53.01184436915871
2019	51.16488562420363
2020	48.06432671677453